This is probably a dumb question but I'm asking anyway
I have access to thousands of free used tobacco float trays. I keep looking at them and thinking that they would be perfect to start tomatoes in. They are styrofoam, so there's really no way to sterilize them though. I can wash them up good in bleach water but still, no way to guarantee sterilization. Would used ones be safe to use, or do I need to buy new ones? I keep thinking about tobacco mosiac virus, and if it would be possible to spread that to tomato plants via these float trays. Any thoughts or comments are appreciated.